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Michigan Cannabis Lab Testing — What COAs Cover

Every batch sold at a Michigan-licensed dispensary must pass third-party lab testing for potency and contaminants. Here's exactly what's tested, what the Certificate of Analysis (COA) shows, and how to spot a clean batch on the shelf.

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01

What Michigan tests for

Cannabinoid profile (THC, THCa, CBD, CBDa, CBG, CBN), terpene profile, residual solvents (for concentrates), heavy metals, mycotoxins, microbial contamination (yeast, mold, salmonella, E. coli), and water activity. Pesticide testing is required for cultivars not grown to organic standards. Failed batches don't reach the retail shelf.

02

Reading the COA

Every Michigan flower jar, vape cart, and edible has a batch number linking to a Certificate of Analysis. The COA is a one-page document showing test results across all required categories with pass/fail markers. Ask any High Club budtender for the COA on any product you're considering — we keep them at the counter.

03

Total THC vs. THCa explained

Raw cannabis contains THCa (acid form), which converts to THC when heated (smoked, vaped, or baked). 'Total THC' on a Michigan COA represents the post-decarboxylation maximum. A 24% Total THC flower started at roughly 27% THCa.

04

Why testing matters at the consumer level

Unregulated cannabis (street market) can carry pesticide residue, heavy metals, mold, and inaccurate dosing. Every Michigan-licensed dispensary product runs through a paper trail you can verify. The 16% effective tax includes the cost of that compliance — it buys real consumer protection.

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Common questions

Are Michigan dispensary products lab tested?

Yes. Every batch sold at a Michigan-licensed dispensary must pass third-party testing for potency, terpenes, pesticides, heavy metals, mycotoxins, and microbial contamination per Michigan Cannabis Regulatory Agency rules.

What is a Certificate of Analysis (COA) for cannabis?

A document showing third-party lab test results for a specific cannabis batch — cannabinoids, terpenes, contaminants, and pass/fail markers. Available on request at any Michigan dispensary.

What does Total THC mean on a cannabis label?

Total THC is the post-decarboxylation THC concentration — what you'll actually experience after heating (smoking, vaping, baking). Raw cannabis stores THC as THCa, which converts to THC with heat.

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